This was a disappointing stay in Konstanz.
There was poor communication before my stay, and check-in instructions were poorly provided.
I was surprised that there was infrequent housekeeping - again, this was not communicated.
Despite misleading signage about breakfast, I was shocked that it was actually 19,5€ and not included in the room - this could have been avoided by communicating at check-in, except no staff were there.
I tried to redeem a voucher for a free drink, but the staff didn't know how to deal with it. Overall, this was a very disappointing stay.